title: Multiresolution foveated laparoscope with high resolvability.
abstract: A key limitation of the state-of-the-art laparoscopes for minimally invasive surgery is the tradeoff between the field of view and spatial resolution in a single-view camera system. As such, surgical procedures are usually performed at a zoomed-in view, which limits the surgeon's ability to see much outside the immediate focus of interest and causes a situational awareness challenge. We proposed a multiresolution foveated laparoscope (MRFL) aiming to address this limitation. The MRFL is able to simultaneously capture wide-angle overview and high-resolution images in real time; it can scan and engage the high-resolution images to any subregion of the entire surgical field in analogy to the fovea of human eye. The MRFL is able to render equivalently 10 million pixel resolution with a low data bandwidth requirement. The system has a large working distance (WD) from 80 to 180 mm. The spatial resolvability is about 45 μm in the object space at an 80 mm WD, while the resolvability of a conventional laparoscope is about 250 μm at a typically 50 mm surgical distance.
authors.affiliation: 3D Visualization and Imaging Systems Laboratory, College of Optical Sciences, University of Arizona, 1630 East University Boulevard, Tucson, Arizona 85721, USA.
authors.forename: Yi
authors.initials: Y
authors.lastname: Qin
authors.forename: Hong
authors.initials: H
authors.lastname: Hua
authors.forename: Mike
authors.initials: M
authors.lastname: Nguyen
mesh_terms: D034841:Abdominal Cavity / Q000601:surgery; D004867:Equipment Design; D005584:Fovea Centralis; D006801:Humans; D020706:Laparoscopes; D007909:Lenses; D019060:Minimally Invasive Surgical Procedures / Q000295:instrumentation*; D012449:Safety